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Type: Multiple-Choice
Category: Quadratic Equations and Expressions
Level: Grade 10
Standards: HSF-IF.C.7, HSF-IF.C.7a
Author: nsharp1
Created: 5 years ago

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Quadratic Equations and Expressions Question

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Grade 10 Quadratic Equations and Expressions CCSS: HSF-IF.C.7, HSF-IF.C.7a

When graphing a quadratic function of the form f(x)=ax2+bx+c, the sign (positive or negative) of which of the following values indicates whether the function opens upwards or downwards?
  1. 4ac
  2. b2
  3. c
  4. a